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FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 30, 2013 | Sep. 30, 2012
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |
Beginning of period | $ 109 | $ 13
Settlements | (269) | (54)
Net losses related to derivatives not held at end of period | (99) | (68)
Net gains related to derivatives still held at end of period | 369 | 218
End of period | 110 | 109
Fair Value, Measurements, Recurring [Member] |  |
Assets |  |
U. S. Stock/Bond Mutual Funds | 14,500 | 13,187
NYMEX/ICE natural gas contracts | 2,518 | 0
OTCBB natural gas contracts | 0 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 784 | 2,874
Total | 17,802 | 16,061
Liabilities |  |
NYMEX/ICE natural gas contracts | 0 | 0
OTCBB natural gas contracts | 5,211 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 685 | 133
Total | 5,896 | 133
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets (Level 1) [Member] |  |
Assets |  |
U. S. Stock/Bond Mutual Funds | 14,500 | 13,187
NYMEX/ICE natural gas contracts | 4,333 | 7,411
OTCBB natural gas contracts | 0 |
NYMEX gasoline and heating oil contracts | 105 | 344
Natural gas commodity contracts | 0 | 0
Total | 18,938 | 20,942
Liabilities |  |
NYMEX/ICE natural gas contracts | 3,687 | 12,253
OTCBB natural gas contracts | 0 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 0 | 0
Total | 3,687 | 12,253
Fair Value, Measurements, Recurring [Member] | Significant Observable Inputs (Level 2) [Member] |  |
Assets |  |
U. S. Stock/Bond Mutual Funds | 0 | 0
NYMEX/ICE natural gas contracts | 330 | 994
OTCBB natural gas contracts | 232 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 1,129 | 3,060
Total | 1,691 | 4,054
Liabilities |  |
NYMEX/ICE natural gas contracts | 321 | 1,891
OTCBB natural gas contracts | 5,443 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 1,140 | 428
Total | 6,904 | 2,319
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets |  |
U. S. Stock/Bond Mutual Funds | 0 | 0
NYMEX/ICE natural gas contracts | 0 | 0
OTCBB natural gas contracts | 0 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 150 | 113
Total | 150 | 113
Liabilities |  |
NYMEX/ICE natural gas contracts | 0 | 0
OTCBB natural gas contracts | 0 |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | 40 | 4
Total | 40 | 4
Fair Value, Measurements, Recurring [Member] | Effects of Netting and Cash Margin Receivables /Payables |  |
Assets |  |
U. S. Stock/Bond Mutual Funds | 0 | 0
NYMEX/ICE natural gas contracts | (2,145) | (8,405)
OTCBB natural gas contracts | (232) |
NYMEX gasoline and heating oil contracts | (105) | (344)
Natural gas commodity contracts | (495) | (299)
Total | (2,977) | (9,048)
Liabilities |  |
NYMEX/ICE natural gas contracts | (4,008) | (14,144)
OTCBB natural gas contracts | (232) |
NYMEX gasoline and heating oil contracts | 0 | 0
Natural gas commodity contracts | (495) | (299)
Total | $ (4,735) | $ (14,443)

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